Table 1

Baseline characteristics of study patients

CharacteristicSterile
% total
(n=747)
Non-sterile
% total
(n=733)
Age, year, mean±SD39.2 (±16.5)39.5 (±16.9)
Sex
 Male74.273.0
Use of antibiotics
 None96.4%96.3%
 Oral antibiotics0.8%1.0%
 Topical antibiotics0.0%0.1%
 Unknown2.8%2.6%
Use of oral antidiabetics
 No92.9%90.9%
 Yes1.1%2.6%
 Unknown6.0%6.5%
Use of insulin
 No95.7%96.6%
 Yes0.9%1.0%
 Unknown3.3%2.5%
Use of immunosuppressants
 No96.1%95.2%
 Yes1.1%2.3%
 Unknown2.8%2.5%
Use of corticosteroids
 No95.2%94.3%
 Yes1.2%2.3%
 Unknown3.6%3.4%
Smokers
 No56.1%58.0%
 Yes34.0%33.6%
 Unknown9.9%8.5%